ECC密码体制结合图像隐藏的安全传输

The Combination Between Elliptic Curve Cryptosystem and Digital Image Hiding for The Security Transfer

图像隐藏技术常与RSA密码体制结合,然而RSA要增加其破译强度必须增加密钥长度,同时图像隐藏信息量却有一定的限制,这就造成密钥存储空间增长与有限隐藏空间的矛盾。论文提出将椭圆曲线密码体制与图像隐藏结合, 利用ECC在相同安全强度下密钥长度短的特点在一定程度上解决了这一矛盾,同时达到安全性和隐蔽性的结合。

RSA is always the most popular encryptton algorithms to change the information into cipher text before hiding data in images. RSA must rise its key length to keep security ability as CPU may processes faster enough to break it. At the same time, there must be limit rooms to save cipher text when hiding data in image. This is a contradiction to save a gradually longer key in a limit room. We present a solution to combine the Elliptic Curve Cryptosystam and Digital-linage-Hiding, the advantage of ECC＇s shorter key at the same security level will solve the problem in some extent, at the same time make the transfer of document secure and also cryptic.